Re:C and C++ Prioritize Performance over Correctness
by MarkMarine on Saturday August 19, 2023 @12:54PM
(#37190715)
Not a rust compiler, they provide crates to interface with their C code in ESP-IDF, which is essentially a FreeRTOS port that supports the dual core Espressif chips, which vanilla FreeRTOS does not support. Also some of their own libraries for things like MQTT, which I found unfortunately subpar in comparison to the vanilla FreeRTOS code.
It’s all beta software, but here is what they list in the docs:
Services like Wi-Fi, HTTP client/server, MQTT, OTA updates, logging etc. are exposed via Espressif's open source IoT Development Framework, ESP-IDF. It is mostly written in C and as such is exposed to Rust in the canonical split crate style:
a sys crate to provide the actual unsafe bindings (esp-idf-sys)
a higher level crate offering safe and comfortable Rust abstractions (esp-idf-svc)
The final piece of the puzzle is low-level hardware access, which is again provided in a split fashion:
esp-idf-hal implements the hardware-independent embedded-hal traits like analog/digital conversion, digital I/O pins, or SPI communication - as the name suggests, it also uses ESP-IDF as a foundation
if direct register manipulation is required, esp32c3 provides the peripheral access crate generated by svd2rust.
More information is available in the ecosystem chapter of The Rust on ESP Book.
It’s all beta software, but here is what they list in the docs:
Services like Wi-Fi, HTTP client/server, MQTT, OTA updates, logging etc. are exposed via Espressif's open source IoT Development Framework, ESP-IDF. It is mostly written in C and as such is exposed to Rust in the canonical split crate style:
a sys crate to provide the actual unsafe bindings (esp-idf-sys) a higher level crate offering safe and comfortable Rust abstractions (esp-idf-svc) The final piece of the puzzle is low-level hardware access, which is again provided in a split fashion:
esp-idf-hal implements the hardware-independent embedded-hal traits like analog/digital conversion, digital I/O pins, or SPI communication - as the name suggests, it also uses ESP-IDF as a foundation if direct register manipulation is required, esp32c3 provides the peripheral access crate generated by svd2rust. More information is available in the ecosystem chapter of The Rust on ESP Book.